02305-4342 ELP 1 Aa,Ab
02h 30m 32.41s -43° 42' 23.3" P.A. 66.00 sep 0.1 mag 10.20,11.10 Sp K5Ve
| Coord 2000 |
02305-4342 |
|
Discov num |
ELP 1 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
02 30 32.41 -43 42 23.3 |
|
| Date first |
2006 |
|
Date last |
2021 |
|
Obs |
14 |
|
| Pa first |
295 |
|
Pa last |
66.1 |
|
P.A. Now (θ) |
28.1° |
|
| Sep first |
0.1 |
|
Sep last |
0.115 |
|
Sep. Now (ρ) |
0.099" |
|
| Mag pri |
10.20 |
|
Mag sec |
11.10 |
|
delta mag (ΔM) |
0.9 |
|
Spectral class |
K5Ve (yellow-orange) |
|
| Pri motion ra |
+080 |
|
Sec motion ra |
|
|
| Pri motion dec |
-013 |
|
Sec motion dec |
|
|
| Notes |
O
R
(Orbital solution, Red magnitudes) |
|
This double is physical.
02305-4342 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
02 30 32 -43 42 23 |
ELP 1 Aa,Ab |
2021 |
14 |
66 |
0.1 |
10.20 |
11.10 |
0.90 |
Y |
<=== |
| Show |
|
|
02 30 32 -43 42 23 |
SKF 1427 AB |
2015 |
8 |
120 |
173.0 |
10.31 |
11.92 |
1.61 |
|
|
Triple system
2 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Eridanus |
|
Tycho2 |
7558-00655-1 |
|
Gaia DR2 |
4946633857666189952 |
|
ORBITAL ELEMENTS
| Period (P) | 14.42y | ± 1.36 |
Periastron (T) | 2020y | ± 5.2 |
Semi-major axis (a) | 0.13a | ± 0.008 |
| Eccentricity (e) | 0.032 | ± 0.017 |
Inclination (i) | 139.7° | ± 4.1 |
Longitude of periastron (ω) | 14.7° | ± 3.6 |
| Node (Ω) | 122.3° | ± 5.5 |
Notes | | |
Reference | Tok2020e | |
| Equinox | | |
Last observation | | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
256.9 |
0.114 |
| 2001 |
229.0 |
0.102 |
| 2002 |
197.2 |
0.101 |
| 2003 |
167.7 |
0.110 |
| 2004 |
143.7 |
0.121 |
| 2005 |
122.9 |
0.126 |
| 2006 |
102.0 |
0.121 |
| 2007 |
77.6 |
0.109 |
| 2008 |
47.4 |
0.099 |
| 2009 |
14.5 |
0.101 |
| 2010 |
346.2 |
0.113 |
| 2011 |
323.9 |
0.127 |
| 2012 |
305.2 |
0.134 |
| 2013 |
287.1 |
0.131 |
| 2014 |
266.8 |
0.120 |
| 2015 |
241.5 |
0.106 |
| 2016 |
210.7 |
0.100 |
| 2017 |
179.4 |
0.105 |
| 2018 |
153.2 |
0.117 |
| 2019 |
131.4 |
0.125 |
| 2020 |
111.0 |
0.124 |
| 2021 |
88.5 |
0.114 |
| 2022 |
60.8 |
0.102 |
| 2023 |
28.1 |
0.099 |
| 2024 |
357.3 |
0.107 |
| 2025 |
332.7 |
0.122 |
| 2026 |
312.9 |
0.132 |
| 2027 |
294.8 |
0.133 |
| 2028 |
275.8 |
0.125 |
| 2029 |
252.8 |
0.112 |
| 2030 |
224.1 |
0.101 |
|
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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